Mystic Falls is a 70 feet (21.3 m) cascade type waterfall on the Little Firehole River, a tributary of the Firehole River

Firehole River

The Firehole River is one of two major tributaries of the Madison River. It flows north approximately from its source in Madison Lake on the Continental Divide to join the Gibbon River at Madison Junction in Yellowstone National Park...

. Originally named Little Firehole Falls by members of the 1872 Hayden

Ferdinand Vandeveer Hayden

Dr. Ferdinand Vandeveer Hayden was an American geologist noted for his pioneering surveying expeditions of the Rocky Mountains in the late 19th century. He was also a physician who served with the Union Army during the Civil War.-Early life:Ferdinand Hayden was born in Westfield, Massachusetts...

 Geologic Survey, the name was changed to Mystic Falls by members of the Arnold Hague

Arnold Hague

Arnold Hague was a United States geologist who did many geological surveys in the U.S., of which the best known was that for Yellowstone National Park. He also had assignments in China and Guatemala. He became a member of the U. S...

 Geological Survey in 1885 for unknown reasons.

Mystic Falls is reached via the 1.2 miles (1.9 km) Mystic Falls Trail which starts at Biscuit Basin in the Upper Geyser Basin.